VITA III: ORC Rating

GPH

601.7

OSN

586.3

LOA

12.15 m

Displacement

7630 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6736

Medium

0.9089

High

1.0436

Triple Offshore

Low

0.8731

Medium

1.125

High

1.2525

Boat Specifications

Dimensions

Length overall: 12.15 m
Beam: 3.89 m
Draft: 2.09 m
Displacement: 7630 kg
Crew weight: 759 kg
Wetted surface: 32.06 m²

Sails

Mainsail: 50.99 m²
Genoa: 47.97 m²
Spinnaker: 95.62 m²
Asymmetric spinnaker: 0 m²

Design

Type: DUFOUR 40 HR
Builder: Dufour Yachts
Designer: felchi
Year built: 2001

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,43.1,4.985193,52,5.57,60,5.9,75,6.19,90,6.15,110,5.76,120,5.59,135,5.04,144.5,4.520243,150,4.25
8,42,5.907328,52,6.61,60,6.92,75,7.15,90,7.15,110,6.99,120,6.82,135,6.2,149.5,5.385147,150,5.36
10,41.2,6.538945,52,7.24,60,7.45,75,7.62,90,7.64,110,7.66,120,7.57,135,7.15,150,6.33,151,6.277014
12,40.1,6.745791,52,7.47,60,7.68,75,7.89,90,7.95,110,8.07,120,7.99,135,7.7,150,7.17,155.5,6.890403
14,39.8,6.859447,52,7.56,60,7.78,75,8.07,90,8.22,110,8.44,120,8.4,135,8.09,150,7.68,170,7.036906
16,39.4,6.88465,52,7.61,60,7.83,75,8.17,90,8.46,110,8.74,120,8.82,135,8.5,150,8.05,180,7.5
20,40.1,7.007256,52,7.65,60,7.86,75,8.27,90,8.77,110,9.13,120,9.52,135,9.39,150,8.84,180,8.24

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.57	5.9	6.19	6.15	5.76	5.59	5.04	4.25
8	6.61	6.92	7.15	7.15	6.99	6.82	6.2	5.36
10	7.24	7.45	7.62	7.64	7.66	7.57	7.15	6.33
12	7.47	7.68	7.89	7.95	8.07	7.99	7.7	7.17
14	7.56	7.78	8.07	8.22	8.44	8.4	8.09	7.68
16	7.61	7.83	8.17	8.46	8.74	8.82	8.5	8.05
20	7.65	7.86	8.27	8.77	9.13	9.52	9.39	8.84

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.1°	3.64	144.5°	3.68
8	42°	4.39	149.5°	4.64
10	41.2°	4.92	151°	5.49
12	40.1°	5.16	155.5°	6.27
14	39.8°	5.27	170°	6.93
16	39.4°	5.32	180°	7.5
20	40.1°	5.36	180°	8.24

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	5.57	6.61	7.24	7.47	7.56	7.61	7.65
60°	5.90	6.92	7.45	7.68	7.78	7.83	7.86
75°	6.19	7.15	7.62	7.89	8.07	8.17	8.27
90°	6.15	7.15	7.64	7.95	8.22	8.46	8.77
110°	5.76	6.99	7.66	8.07	8.44	8.74	9.13
120°	5.59	6.82	7.57	7.99	8.40	8.82	9.52
135°	5.04	6.20	7.15	7.70	8.09	8.50	9.39
150°	4.25	5.36	6.33	7.17	7.68	8.05	8.84